diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index 3af6d03..3441518 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -237,7 +237,10 @@
 au BufNewFile,BufRead *.cmd
 	\ if getline(1) =~ '^/\*' | setf rexx | else | setf dosbatch | endif
 " ABB RAPID or Batch file for MSDOS.
-au BufNewFile,BufRead *.sys\c			call dist#ft#FTsys()
+au BufNewFile,BufRead *.sys			call dist#ft#FTsys()
+if has("fname_case")
+  au BufNewFile,BufRead *.Sys,*.SYS			call dist#ft#FTsys()
+endif
 
 " Batch file for 4DOS
 au BufNewFile,BufRead *.btm			call dist#ft#FTbtm()
@@ -455,7 +458,10 @@
 au BufNewFile,BufRead .cling_history		setf cpp
 
 " Clipper, FoxPro, ABB RAPID or eviews
-au BufNewFile,BufRead *.prg\c			call dist#ft#FTprg()
+au BufNewFile,BufRead *.prg			call dist#ft#FTprg()
+if has("fname_case")
+  au BufNewFile,BufRead *.Prg,*.PRG			call dist#ft#FTprg()
+endif
 
 " Clojure
 au BufNewFile,BufRead *.clj,*.cljs,*.cljx,*.cljc		setf clojure
@@ -602,7 +608,10 @@
 au BufNewFile,BufRead .wakatime.cfg		setf dosini
 
 " Configure files
-au BufNewFile,BufRead *.cfg\c			call dist#ft#FTcfg()
+au BufNewFile,BufRead *.cfg			call dist#ft#FTcfg()
+if has("fname_case")
+  au BufNewFile,BufRead *.Cfg,*.CFG			call dist#ft#FTcfg()
+endif
 
 " Cucumber
 au BufNewFile,BufRead *.feature			setf cucumber
@@ -1227,9 +1236,14 @@
 au BufNewFile,BufRead *.kix			setf kix
 
 " Kuka Robot Language
-au BufNewFile,BufRead *.src\c			call dist#ft#FTsrc()
-au BufNewFile,BufRead *.dat\c			call dist#ft#FTdat()
-au BufNewFile,BufRead *.sub\c			setf krl
+au BufNewFile,BufRead *.src			call dist#ft#FTsrc()
+au BufNewFile,BufRead *.dat			call dist#ft#FTdat()
+au BufNewFile,BufRead *.sub			setf krl
+if has("fname_case")
+   au BufNewFile,BufRead *.Src,*.SRC			call dist#ft#FTsrc()
+   au BufNewFile,BufRead *.Dat,*.DAT			call dist#ft#FTdat()
+   au BufNewFile,BufRead *.Sub,*.SUB			setf krl
+endif
 
 " Kimwitu[++]
 au BufNewFile,BufRead *.k			setf kwt
@@ -1479,7 +1493,10 @@
 au BufNewFile,BufRead *.mmp			setf mmp
 
 " ABB Rapid, Modula-2, Modsim III or LambdaProlog
-au BufNewFile,BufRead *.mod\c			call dist#ft#FTmod()
+au BufNewFile,BufRead *.mod			call dist#ft#FTmod()
+if has("fname_case")
+   au BufNewFile,BufRead *.Mod,*.MOD			call dist#ft#FTmod()
+endif
 
 " Modula-3 (.m3, .i3, .mg, .ig)
 au BufNewFile,BufRead *.[mi][3g]		setf modula3
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index c10023d..45a5df2 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -1155,15 +1155,14 @@
   unlet g:filetype_cfg
 
   " RAPID cfg
-  let ext = 'cfg'
   for i in ['EIO', 'MMC', 'MOC', 'PROC', 'SIO', 'SYS']
-    call writefile([i .. ':CFG'], 'cfgfile.' .. ext)
-    execute "split cfgfile." .. ext
-    call assert_equal('rapid', &filetype)
-    bwipe!
-    call delete('cfgfile.' .. ext)
-    " check different case of file extension
-    let ext = substitute(ext, '\(\l\)', '\u\1', '')
+    for ext in ['cfg', 'Cfg', 'CFG']
+      call writefile([i .. ':CFG'], 'cfgfile.' .. ext)
+      execute "split cfgfile." .. ext
+      call assert_equal('rapid', &filetype)
+      bwipe!
+      call delete('cfgfile.' .. ext)
+    endfor
   endfor
 
   " clean up
diff --git a/src/version.c b/src/version.c
index 4f6375b..a2d6bfd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    731,
+/**/
     730,
 /**/
     729,